Car-buffer



(No ModeL) A. IGALLINANT.

OAR BUFFER.

Patented May"29,1883.

715/772 cases Z UNITED STATES PATENT OFFICE,

i ADOLPHE GALLINANT, on ROSLYN, NEW YORK.

CAR-BUFFER.

SPECIFICATION forming part of Letters Patent No. 278,328, dated May 29, 1883;

Application filed February 28, 1883. (No model.)

To all chom it may concern.-

Be it known that I, ADQLPHE GALLINANT, a citizen ofFrance, but for past eight yearsa resident of the United States, and now residing at Roslyn, in the county of Queens and State of New York, have invented a new and useful Improvement in Buffers for Railway- Cars, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, making part of this specification, and th'eletters and figures marked thereon.

My invention relates to certain new and useful improvements in buffers for railwaycars, which may, however, be used to relieve the shock of colliding bodies generally, and is not limited to its use on railway-cars alone.

Previous to my invention various forms of buffershave been devised, in which have been employed rubber or metal springs so arranged as to contract or yield when the forwardend of the buffer-rod meta decided force or resistance, and thus deaden the shock or jar incident to the meeting of the two objects; but

none of such contrivances have, so far as my knowledge extends, been provided with means whereby, after contraction of the spring and removal of the resistance or opposing force, the

expansion of the spring, and the consequent projection of the buffer-rodto its first position,

couldtake place gradually or'slowly, and thus prevent accident as well as derangement of the parts of the apparatus. This is one of the objects of my invention, which consists, primarily, in the combination, with a buffer-bar and a spring adapted. to be compressed thereby, of a regulator mechanism for insuring a slow and steady return of the bufferbar toits normal position, as will be hereinafter more particularly described; and my invention furtherconsists in certain features of construction of the parts, and in various combinations of the elements which will also be hereinafter fully described, and specifically pointed out in the claims.

In the accompanying drawings, Figure l is a side view of a railway-locomotive having my invention applied thereto. Fig.2 is a top view' thereof, omitting certain portions of the locomotive. Fig. 3 is a longitudinal central section of my novel buffer mechanism detached and made on an enlarged scaleyand Fig. 4 is a top view of portion of Fig. 3, showing particularly the governor or regulating mechanism.

In the several views the same parts will be found designated by the same letters of reference.

.Ais a housing, casing, or tube fixed to each side of a railway-locomotive, within which casing the buffer-rod B (proy ided at its forward end with a disk or head, 0, is adapted to work.

In rear of the buffer-rod, and contained within the housing on holder, is a strong spiral spring, D, whose normal position is in a state ot'expansion, and resting againstthe inner end of the buffer rod or bar. The buffer-bar B is cut out or recessed on its .under side, and a toothed bar or rack, E, is pivoted or suspended therein, so as to allow vertical play or movement; and to the lower portion of the tube A is secured a motion regulating or retarding spur-wheel a, is a toothed wheel, 0, which en-.

gages within the casing withthe rack E of the bufl'er-bar.

The teeth of both the wheel and therack are cut inclinedly, so that when the buffer-bar, and with it the rack,-is pushed into the casing, the teeth of the rack will slide or ride easily over the teeth of the wheel 0 without engaging with and revolving it, the rack, by reason of its mode of suspension, bobbing up and down as its teeth pass over the teeth of wheel 6. When the buffer-bar is pulled or forced out, the

' rack and wheel teeth then engage or mesh, and

motion is communicated to the train of gear:

ing and the fiy isrevolved, the effect of all of which is the slow and easy projection-of the buffer-bar.

Having described the construction and application of the various parts of my novel butfer, I shall new state the general operation of the same.

Supposing all the parts to be in their regular positions, asin the several figures of the drawings, any obstruction or force met by the disk 0 at the headot the buffer-bar will drive spring, of a bufferbar provided with a rack the latter and its contained rack farther into which engages with a regulating mechanism,

the casing, against the spring-D therein, compressing the latter proportionately, and thus relieving the shock of the collision, as evident and well understood. It now the force which holds the spring under compression be suddenly removed, the buffer-bar will notbequiekl y shot forward by the expansion of the spring, on account of the immediate engagement of the teeth of the rack with those of the wheel 0, which, as before described, being fast on the same shaft as the spur-wheel a, must drive the latter and the rest of the system of gearing as well as the fan or fly, and thus the propulsion of the buffer-bar by the spring ismade slow and regular.

VVhatI claim as of my invention, and desire to secure by Letters Patent, is-

1. The combination, with a housing and its substantially as and for the purpose set forth.

2. The combination, with a housing and its spring and a regulating mechanism, of a buffer-bar provided with a rack capable of vertical play, as and for the purpose set forth.

3. The combination, with a housing and its spring and a regulating mechanism, an element of which is a toothed wheel, of a bufferbar provided with a rack capable of vertical play, and passing inoperatively over the wheel as it enters the housing, but engaging therewith as it returns.

Witness my hand this 16th day of February, 5 

